Measuring the phase of received signals
    1.
    发明授权
    Measuring the phase of received signals 有权
    测量接收信号的相位

    公开(公告)号:US09182747B2

    公开(公告)日:2015-11-10

    申请号:US13525234

    申请日:2012-06-15

    IPC分类号: G04G7/00 G06F19/00 G01V3/28

    CPC分类号: G04G7/00 G01V3/28 G06F19/00

    摘要: The present disclosure relates to a method to determine the phase of a signal when transmitter and receiver circuits use separate clocks. A discrepancy between the separate clocks is determined, as is a correction factor between the separate clocks. The phase is determined using a measured time of arrival of the signal, the determined discrepancy, and the determined correction factor. A drift factor and an expected start time of a pulse sequence may be used to determine the discrepancy. A start time of a pulse within the pulse sequence is determined and used to determine the correction factor. The method works by either absolute synchronization of the separate clocks, or by making the measurements independent of clock synchronization.

    摘要翻译: 本公开涉及当发射机和接收机电路使用分离的时钟时确定信号的相位的方法。 确定分离时钟之间的差异,以及分离时钟之间的校正因子。 使用测量的信号到达时间,确定的差异和确定的校正因子确定相位。 漂移因子和脉冲序列的预期开始时间可用于确定差异。 脉冲序列内的脉冲的开始时间被确定并用于确定校正因子。 该方法通过独立时钟的绝对同步或通过使测量与时钟同步无关来工作。

    Apparatus and system for well placement and reservoir characterization

    公开(公告)号:US08933699B2

    公开(公告)日:2015-01-13

    申请号:US13045794

    申请日:2011-03-11

    IPC分类号: G01V3/00 G01V3/28

    CPC分类号: G01V3/28

    摘要: A resistivity array having a modular design includes a transmitter module with at least one antenna, wherein the transmitter module has connectors on both ends adapted to connect with other downhole tools; and a receiver module with at least one antenna, wherein the transmitter module has connectors on both ends adapted to connect with other downhole tools; and wherein the transmitter module and the receiver module are spaced apart on a drill string and separated by at least one downhole tool. Each transmitter and receiver module may comprise at least one antenna coil with a magnetic moment orientation not limited to the tool longitudinal direction. A spacing between the transmitter and receiver module may be selected based on expected reservoir thickness.

    Detection of 3D formation structures based on electro-magnetic coupling measurements
    3.
    发明授权
    Detection of 3D formation structures based on electro-magnetic coupling measurements 有权
    基于电磁耦合测量的三维形成结构的检测

    公开(公告)号:US08754650B2

    公开(公告)日:2014-06-17

    申请号:US12718704

    申请日:2010-03-05

    IPC分类号: G01V3/10

    CPC分类号: G01V3/18

    摘要: The present disclosure relates to a method to determine a characteristic of a subsurface formation using electromagnetic coupling components. A downhole logging tool having one or more transmitters and one or more receivers, and being capable of measuring the electromagnetic coupling components is provided. The electromagnetic coupling components are measured using the downhole logging tool and used to form a 3-D Lateral Indicator and/or a 3-D Longitudinal Indicator. The 3-D Lateral Indicator and/or the 3-D Longitudinal Indicator are used to determine the characteristic of the subsurface formation.

    摘要翻译: 本公开涉及一种使用电磁耦合部件确定地下地层特征的方法。 提供具有一个或多个发射器和一个或多个接收器并且能够测量电磁耦合部件的井下测井工具。 使用井下测井工具测量电磁耦合部件,并用于形成3-D侧向指示器和/或3-D纵向指示器。 3-D侧向指示器和/或3-D纵向指示器用于确定地下地层的特征。

    Measuring The Phase Of Received Signals
    4.
    发明申请
    Measuring The Phase Of Received Signals 审中-公开
    测量接收信号的相位

    公开(公告)号:US20130080102A1

    公开(公告)日:2013-03-28

    申请号:US13525234

    申请日:2012-06-15

    IPC分类号: G04G7/00 G06F19/00

    CPC分类号: G04G7/00 G01V3/28 G06F19/00

    摘要: The present disclosure relates to a method to determine the phase of a signal when transmitter and receiver circuits use separate clocks. A discrepancy between the separate clocks is determined, as is a correction factor between the separate clocks. The phase is determined using a measured time of arrival of the signal, the determined discrepancy, and the determined correction factor. A drift factor and an expected start time of a pulse sequence may be used to determine the discrepancy. A start time of a pulse within the pulse sequence is determined and used to determine the correction factor. The method works by either absolute synchronization of the separate clocks, or by making the measurements independent of clock synchronization.

    摘要翻译: 本公开涉及当发射机和接收机电路使用分离的时钟时确定信号的相位的方法。 确定分离时钟之间的差异,以及分离时钟之间的校正因子。 使用测量的信号到达时间,确定的差异和确定的校正因子确定相位。 漂移因子和脉冲序列的预期开始时间可用于确定差异。 脉冲序列内的脉冲的开始时间被确定并用于确定校正因子。 该方法通过独立时钟的绝对同步或通过使测量与时钟同步无关来工作。

    Apparatus and Method for Actively Balancing Impedance of A Resistivity Measuring Tool
    5.
    发明申请
    Apparatus and Method for Actively Balancing Impedance of A Resistivity Measuring Tool 有权
    用于积极平衡电阻率测量工具阻抗的装置和方法

    公开(公告)号:US20120326723A1

    公开(公告)日:2012-12-27

    申请号:US13523867

    申请日:2012-06-14

    IPC分类号: G01V3/20

    CPC分类号: G01V3/24

    摘要: An apparatus for making a resistivity measurement of an underground formation surrounding a borehole is provided. The apparatus includes a conductive tool body, at least one current injector electrode positioned between the tool body and a wall of the bore hole, at least one current return electrode positioned between the tool body and the wall of the bore hole, an electrical measurement device configured to monitor a voltage or a current signal indicative of an impedance imbalance, a regulator connected to the electrical measurement device, whereby the regulator is configured to receive the voltage or the current signal indicative of the impedance imbalance and is configured to generate an adjustment signal based on the voltage or the current signal indicative of the impedance imbalance.

    摘要翻译: 提供了一种用于对围绕钻孔的地下地层进行电阻率测量的装置。 该装置包括导电工具主体,至少一个电流注入器电极,位于工具主体和钻孔的壁之间,至少一个电流返回电极,位于工具主体和钻孔的壁之间;电测量装置 被配置为监视指示阻抗不平衡的电压或电流信号,连接到所述电测量装置的调节器,由此所述调节器被配置为接收指示所述阻抗不平衡的电压或电流信号,并且被配置为产生调整信号 基于表示阻抗不平衡的电压或电流信号。

    Method for electromagnetically measuring physical parameters of a pipe
    6.
    发明授权
    Method for electromagnetically measuring physical parameters of a pipe 有权
    用于电磁测量管道物理参数的方法

    公开(公告)号:US08165825B2

    公开(公告)日:2012-04-24

    申请号:US11912488

    申请日:2006-04-05

    IPC分类号: G01B5/28

    摘要: The invention discloses a method for electromagnetically measuring physical parameters of a pipe that includes measuring a pipe inner diameter ID and a pipe ratio of magnetic permeability to electrical conductivity μ2/σ2 by means of a measuring arrangement 1 comprising a transmitter coil 2 and a receiver coil 3, both coils being coaxial to and longitudinally spaced from each other, the measuring arrangement being adapted to be positioned into the pipe CS and displaced through the pipe.

    摘要翻译: 本发明公开了一种用于电磁测量管道的物理参数的方法,该方法包括通过包括发射器线圈2和发射器线圈2的测量装置1测量管内径ID和磁导率与导电率μ2/ 接收器线圈3,两个线圈彼此同轴并且纵向间隔开,测量装置适于定位到管CS中并且通过管移位。

    APPARATUS AND SYSTEM FOR WELL PLACEMENT AND RESERVOIR CHARACTERIZATION
    8.
    发明申请
    APPARATUS AND SYSTEM FOR WELL PLACEMENT AND RESERVOIR CHARACTERIZATION 审中-公开
    装置和系统,用于井架和储层特征

    公开(公告)号:US20110238220A1

    公开(公告)日:2011-09-29

    申请号:US13045794

    申请日:2011-03-11

    IPC分类号: G05B19/19 E21B47/02 E21B49/00

    CPC分类号: G01V3/28

    摘要: A resistivity array having a modular design includes a transmitter module with at least one antenna, wherein the transmitter module has connectors on both ends adapted to connect with other downhole tools; and a receiver module with at least one antenna, wherein the transmitter module has connectors on both ends adapted to connect with other downhole tools; and wherein the transmitter module and the receiver module are spaced apart on a drill string and separated by at least one downhole tool. Each transmitter and receiver module may comprise at least one antenna coil with a magnetic moment orientation not limited to the tool longitudinal direction. A spacing between the transmitter and receiver module may be selected based on expected reservoir thickness.

    摘要翻译: 具有模块化设计的电阻率阵列包括具有至少一个天线的发射器模块,其中所述发射器模块在两端具有适于与其他井下工具连接的连接器; 以及具有至少一个天线的接收器模块,其中所述发射器模块在两端具有适于与其他井下工具连接的连接器; 并且其中所述发射器模块和所述接收器模块在钻柱上间隔开并且由至少一个井下工具隔开。 每个发射器和接收器模块可以包括至少一个具有不限于刀具纵向方向的磁矩取向的天线线圈。 可以基于预期的储层厚度来选择发射器和接收器模块之间的间隔。

    Electromagnetic imaging method and device
    9.
    发明授权
    Electromagnetic imaging method and device 有权
    电磁成像方法及装置

    公开(公告)号:US07960969B2

    公开(公告)日:2011-06-14

    申请号:US12095844

    申请日:2006-11-28

    IPC分类号: G01N27/82

    CPC分类号: G01V3/28

    摘要: An electromagnetic imaging apparatus and method for electromagnetically measuring physical parameters of a pipe CJ, CC by means of a plurality of measuring arrangement ZMA, MCMA, MonMa, ImMA comprising a plurality of transmitter coil ZTX, LFTX, DTX and a plurality of receiver coil ZRX1, ZR2, MRX, MC, PRX1, PRX2, PRX3, PRX4, PRX5, PRX6, PRX7, PRX8, PRX9, PRX10, PRX11, PRX12, PRX13, PRX14, PRX15, PRX16, PRX17, PRX18, the transmitter coils and receiver coils being associated so as to form the plurality of measuring arrangement, the plurality of measuring arrangement being adapted to be positioned into the pipe and displaced through the pipe, the physical parameters being measured for a plurality of position along the pipe.

    摘要翻译: 一种用于通过多个测量装置ZMA,MCMA,MonMa,ImMA电磁测量管道CJ,CC的物理参数的电磁成像装置和方法,包括多个发射器线圈ZTX,LFTX,DTX和多个接收器线圈ZRX1 ,ZX2,MRX,MC,PRX1,PRX2,PRX3,PRX4,PRX5,PRX6,PRX7,PRX8,PRX9,PRX10,PRX11,PRX12,PRX13,PRX14,PRX15,PRX16,PRX17,PRX18,发送器线圈和接收器线圈为 相关联以形成多个测量装置,所述多个测量装置适于定位到管中并且通过管移动,物理参数被测量为沿着管的多个位置。

    APPARATUS AND SYSTEM FOR WELL PLACEMENT AND RESERVOIR CHARACTERIZATION
    10.
    发明申请
    APPARATUS AND SYSTEM FOR WELL PLACEMENT AND RESERVOIR CHARACTERIZATION 有权
    装置和系统,用于井架和储层特征

    公开(公告)号:US20100321022A1

    公开(公告)日:2010-12-23

    申请号:US12844604

    申请日:2010-07-27

    IPC分类号: G01V3/02

    CPC分类号: G01V3/28

    摘要: A resistivity array having a modular design includes a transmitter module with at least one antenna, wherein the transmitter module has connectors on both ends adapted to connect with other downhole tools; and a receiver module with at least one antenna, wherein the transmitter module has connectors on both ends adapted to connect with other downhole tools; and wherein the transmitter module and the receiver module are spaced apart on a drill string and separated by at least one downhole tool. Each transmitter and receiver module may comprise at least one antenna coil with a magnetic moment orientation not limited to the tool longitudinal direction. A spacing between the transmitter and receiver module may be selected based on expected reservoir thickness.

    摘要翻译: 具有模块化设计的电阻率阵列包括具有至少一个天线的发射器模块,其中所述发射器模块在两端具有适于与其他井下工具连接的连接器; 以及具有至少一个天线的接收器模块,其中所述发射器模块在两端具有适于与其他井下工具连接的连接器; 并且其中所述发射器模块和所述接收器模块在钻柱上间隔开并且由至少一个井下工具隔开。 每个发射器和接收器模块可以包括至少一个具有不限于刀具纵向方向的磁矩取向的天线线圈。 可以基于预期的储层厚度来选择发射器和接收器模块之间的间隔。